CVE-2026-33202
Critical
Description
Active Storage allows users to attach cloud and local files in Rails applications. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, Active Storage's `DiskService#delete_prefixed` passes blob keys directly to `Dir.glob` without escaping glob metacharacters. If a blob key contains attacker-controlled input or custom-generated keys with glob metacharacters, it may be possible to delete unintended files from the storage directory. Versions 8.1.2.1, 8.0.4.1, and 7.2.3.1 contain a patch.
SeverityCritical
CVSS9.1
Exploit probability—
ProductRails
PublishedMar 24, 2026
First seenMar 24, 2026
Weakness typeCWE-74Injection
How to fix
Update
- rubyonrails rails7.2.3.1, 8.0.4.1, 8.1.2.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| rubyonrails rails | v < 7.2.3.1, 8.0.0 ≤ v < 8.0.4.1, 8.1.0 ≤ v < 8.1.2.1 | 7.2.3.1, 8.0.4.1, 8.1.2.1 |
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